Wooly Nylon Thread - 1000m Spools - Color 9219-50 Colors Available - by Threadart Wooly nylon threads have a vibrant shine and color. Serges beautifully with smooth and strong edges and seams. Perfect in upper and lower loopers for rolled hems and edges. Stretchy thread for seams of swimwear, lingerie, knits, children's clothing and active wear. 1000M Spools, #200, 50 colors available.